Electromagnetic flow-revolving non-ferrous metal recycling melting and holding integrated furnace

Abstract

The present application relates to the technical field of smelting furnace, and provides a melting and preserving integrated furnace for non-ferrous metal recycling, which is characterized by comprising a furnace body, an electromagnetic rolling stirring device and an electromagnetic propeller, the furnace body has a feeding cavity, a cold chamber and a hot chamber which are sequentially communicated, a spoiler wall is arranged between the feeding cavity and the cold chamber, the lower part of the spoiler wall is provided with a liquid passage, the electromagnetic rolling stirring device is arranged at the lower part outside the feeding cavity, the electromagnetic rolling stirring device is configured to drive part of the molten liquid in the feeding cavity to enter the cold chamber through the liquid passage, and drive part of the molten liquid in the feeding cavity to impact the spoiler wall and roll downward, so as to stir the raw materials by means of the solution, and the electromagnetic propeller is arranged on the outer bottom wall of the furnace body. The melting and preserving integrated furnace provided by the present application realizes the circulation of the molten liquid in the furnace cavity of the smelting furnace through the cooperation of the electromagnetic rolling stirring device and the electromagnetic propeller, and solves the technical problem that the existing technology adopts the graphite rotor to circulate the cold and hot molten liquid, which is easy to mix impurities.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of furnaces, in particular to an electromagnetic flow rolling type non-ferrous metal recycling melting and holding integrated furnace. BACKGROUND

[0002] In the field of metal smelting and processing, the melting and holding integrated equipment (referred to as "melting and holding integrated furnace") of metal melt is the core link connecting metal raw materials and finished product processing, and its performance directly affects the quality of metal melt, production efficiency and production cost. It is widely used in the smelting production scene of aluminum, copper and other non-ferrous metals and some alloys. With the continuous improvement of the requirements of industrial production on the adaptability of raw materials, the purity of molten metal and the control of energy consumption, the technical defects of the existing melting and holding integrated furnace are gradually highlighted, and it is difficult to meet the flexible, efficient and high-quality production requirements.

[0003] The structure of "mechanical pump + graphite rotor" is generally used to realize the circulating stirring of cold and hot metal melt. The graphite rotor is directly immersed in the high-temperature metal melt, and under the action of continuous rotating stirring and melt flushing, the graphite material is easy to wear and peel off. On the one hand, the graphite impurities generated by wear will directly mix into the metal melt, causing the purity of the melt to decrease, and then affecting the mechanical properties and surface quality of the subsequent castings, profiles and other products, especially for high-precision aluminum alloy, copper alloy and other impurity-sensitive material production, the influence is significant. On the other hand, the worn graphite rotor needs to be replaced regularly, which not only increases the procurement cost of graphite consumables, but also interrupts the production process, reduces the overall operation efficiency of the equipment, and increases the maintenance working hours and downtime losses of the enterprise.

[0004] Therefore, it is urgent to improve the existing melting furnace to solve the above problems. SUMMARY

[0005] In order to overcome the above defects, the embodiments of the present application provide an electromagnetic flow rolling type non-ferrous metal recycling melting and holding integrated furnace, which solves the technical problem that the existing technology adopts the graphite rotor to circulate the cold and hot melt, which is easy to mix impurities.

[0006] According to one aspect, at least one embodiment of the present application provides a melting and holding integrated furnace for electromagnetic flow rolling non-ferrous metal regeneration, comprising a furnace body, an electromagnetic rolling stirrer and an electromagnetic propeller, the furnace body has a feeding cavity, a cold chamber and a hot chamber which are sequentially communicated, a spoiler wall is arranged between the feeding cavity and the cold chamber, the lower part of the spoiler wall is provided with the liquid outlet, the electromagnetic rolling stirrer is arranged at the lower part of the outer side of the feeding cavity, the electromagnetic rolling stirrer is configured to drive part of the molten liquid in the feeding cavity to enter the cold chamber through the liquid outlet, and drive part of the molten liquid in the feeding cavity to impact the spoiler wall and roll upward, so as to stir the input raw material by means of the solution, the electromagnetic propeller is arranged on the outer bottom wall of the furnace body and located between the cold chamber and the hot chamber, and the electromagnetic propeller is configured to drive the molten liquid to circulate in the cold chamber and the hot chamber.

[0007] As a further technical solution, the furnace body further has a feeding port one communicated with the top of the feeding cavity and a feeding port two communicated with the cold chamber, the feeding port one is used for inputting metal solid particles and metal scraps, and the feeding port two is used for inputting metal solid blocks.

[0008] As a further technical solution, the feeding port one comprises a feeding port of a feeding machine and a metal scrap feeding port, the feeding port of the feeding machine is used for inputting metal solid particles in cooperation with the feeding machine, and the metal scrap feeding port is used for inputting metal scraps.

[0009] As a further technical solution, the furnace body further has a discharge port on the outer wall, and the discharge port is communicated with the hot chamber.

[0010] As a further technical solution, a spiral material guide plate is arranged in the metal scrap feeding port, the spiral material guide plate is coaxial with the metal scrap feeding port, and a plurality of dispersion holes are formed in the spiral material guide plate.

[0011] As a further technical solution, the pitch of the spiral material guide plate gradually decreases from top to bottom.

[0012] As a further technical solution, the discharge port is connected with a discharge pipe, an annular sealing plate is sleeved on the outer periphery of the discharge pipe, the annular sealing plate is inclined away from the furnace body from bottom to top, a swing assembly for blocking the discharge pipe is arranged on the outer side of the furnace body, the swing assembly comprises a swing arm and a sealing cover elastically connected to the swing arm, the sealing cover is in contact with the annular sealing plate, and the sealing cover is configured to open or close the discharge pipe after rotating with the swing arm.

[0013] As a further technical solution, the end of the swing arm is provided with a connecting plate, a plurality of elastic members are connected between the connecting plate and the sealing cover, and the elastic members are used to provide the force of abutting the sealing cover against the annular sealing plate.

[0014] As a further technical solution, a sealing groove is arranged on the annular sealing plate and the sealing cover or on the discharge end face and the sealing cover, and a sealing ring is arranged in the sealing groove.

[0015] As a further technical solution, a flow groove is arranged below the discharge port.

[0016] In the present application, the three-cavity sequential communication structure of the furnace body provides an ordered flow path for the molten liquid, avoiding temperature or composition unevenness caused by local retention of the molten liquid; the arrangement of the overflow port ensures stable transition of the molten liquid from the feed chamber to the cold chamber without the need for additional flow guiding components. The cooperation of the turbulence wall and the electromagnetic rolling stirrer realizes rolling stirring of the molten liquid through non-contact electromagnetic driving, compared with the traditional "mechanical pump + graphite rotor" stirring mode, without the need to set mechanical components that extend into the molten liquid, thereby avoiding impurities caused by wear of the mechanical components from mixing into the molten liquid, while reducing the maintenance requirements of the mechanical components and reducing downtime losses. The cooperation of the electromagnetic propeller and the three-cavity structure can drive the molten liquid to circulate between the cold chamber and the hot chamber, promote heat exchange and component mixing of the molten liquid in the two chambers, and further ensure the quality of the molten liquid. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the description of the embodiments of the present application will be briefly introduced. Obviously, the drawings in the following description are only some example embodiments of the present application. Those skilled in the art can obtain other drawings according to the contents of the example embodiments of the present application and these drawings without creating any creative labor.

[0018] Figure 1 FIG. 1 is a cross-sectional structure schematic diagram of a furnace body front view of an embodiment of the present application;

[0019] Figure 2 FIG. 3 is a cross-sectional structure schematic diagram of a furnace body top view of an embodiment of the present application; Figure 1

[0020] Figure 3 FIG. 5 is a structure schematic diagram of a spiral material guide plate installed in a metal scrap feed port in another embodiment of the present application;

[0021] Figure 4 FIG. 7 is a three-dimensional structure schematic diagram of a spiral material guide plate in an embodiment of the present application; Figure 3

[0022] Figure 5 FIG. 9 is a three-dimensional structure schematic diagram of an annular sealing plate, a sealing cover, a rotating shaft and a flow groove in another embodiment of the present application;

[0023] Figure 6 FIG. 11 is a three-dimensional structure schematic diagram of a sealing cover in an embodiment of the present application; and Figure 5 ​​Fig. 2 is a perspective view of the discharge end face and the annular sealing plate in the embodiment of the application;

[0024] Fig. 1 is a schematic view of the furnace body; 11 is the feeding cavity; 111 is the liquid passing port; 12 is the cold chamber; 13 is the hot chamber; 14 is the turbulence wall; 15 is the feeding port I; 151 is the feeding port of the feeding machine; 152 is the metal scrap feeding port; 1521 is the spiral guide plate; 1522 is the dispersion hole; 16 is the feeding port II; 17 is the discharge port; 171 is the discharge end face; 1711 is the sealing groove; 1712 is the sealing ring; 172 is the annular sealing plate; 2 is the electromagnetic rolling stirrer; 3 is the electromagnetic propeller; 4 is the rotating shaft; 41 is the swing arm; 411 is the sealing cover; 42 is the elastic member; 5 is the flow channel. DETAILED DESCRIPTION

[0025] The application will be further described below in conjunction with the drawings and embodiments. It should be understood that the specific embodiments described herein merely serve illustrative purposes and are not intended to limit the application.

[0026] In order to make the drawings simple, only the parts related to the application are shown in the drawings, which do not represent the actual structure of the product. In addition, in order to make the drawings simple and easy to understand, only one of the parts with the same structure or function is shown in some drawings, or only one of them is marked. In this text, "one" not only means "only one", but also means "more than one", and "several" includes "two" and "more than two".

[0027] In this text, it should be noted that, unless otherwise explicitly specified and limited, the terms "mounting", "connection" and "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the application can be understood according to the specific circumstances.

[0028] In the application, unless otherwise explicitly specified and limited, the "upper" or "lower" of the first feature to the second feature can include the direct contact of the first and second features, or the contact of the first and second features through another feature between them. Moreover, the "upper", "upper" and "upper" of the first feature to the second feature include the vertical direction of the first feature above and obliquely above the second feature, or only means that the horizontal height of the first feature is higher than that of the second feature. The "lower", "lower" and "lower" of the first feature to the second feature include the vertical direction of the first feature below and obliquely below the second feature, or only means that the horizontal height of the first feature is less than that of the second feature.

[0029] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of description and simplification of operation, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention.

[0030] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0031] The electromagnetic flow-type integrated melting and holding furnace for non-ferrous metal recycling provided in this embodiment is mainly used in the recycling and smelting of non-ferrous metals such as aluminum and copper, as well as some alloys. It is particularly suitable for production processes that require integrated melting and holding of metal raw materials in different forms. In the field of metal smelting and processing, the integrated melting and holding furnace is the core equipment connecting metal raw materials and finished product processing. Its performance directly affects the quality of molten metal, production efficiency, and production costs. In the prior art, integrated melting and holding furnaces mostly use a "mechanical pump + graphite rotor" to achieve molten metal circulation and stirring. Wear of the graphite rotor can easily lead to impurities being mixed into the molten metal, and it requires periodic shutdowns for replacement, affecting production efficiency and molten metal purity. This embodiment solves the above-mentioned technical problems through a non-contact electromagnetic drive structure.

[0032] like Figures 1-2 The diagram illustrates the internal structure of a furnace body 1 according to an embodiment of the present invention, including the furnace body 1, an electromagnetic stirring device 2, and an electromagnetic propeller 3. The furnace body 1 has three functional chambers: a feeding chamber 11, a cold chamber 12, and a hot chamber 13. These three chambers are sequentially connected along the direction of molten liquid flow, forming a complete flow path for the molten liquid within the furnace body 1. A liquid outlet 111 is provided at the bottom of the feeding chamber 11. One end of the liquid outlet 111 communicates with the internal space of the feeding chamber 11, and the other end communicates with the internal space of the cold chamber 12, forming a dedicated channel for conveying molten liquid from the feeding chamber 11 to the cold chamber 12. A baffle wall 14 is also fixedly installed inside the furnace body 1. The baffle wall 14 is positioned above the liquid outlet 111, and its extension direction intersects with the potential flow direction of the molten liquid in the feeding chamber 11, thereby altering the flow trajectory of the molten liquid.

[0033] The electromagnetic stirring agitator 2 is installed on the lower part of the outer wall of the furnace body 1, and its installation position is located on one side of the feeding chamber 11. The working area of ​​the electromagnetic stirring agitator 2 can cover the internal space of the feeding chamber 11, and it can drive the movement of the molten liquid in the feeding chamber 11 through electromagnetic force. The electromagnetic propeller 3 is installed on the bottom wall of the furnace body 1, and its installation position spans the lower part of the cold chamber 12 and the hot chamber 13. Its working area can cover the internal space of both the cold chamber 12 and the hot chamber 13, and it is used to drive the molten liquid to circulate between the two chambers.

[0034] The working process of the embodiment is divided into two core stages, namely the molten metal driving and raw material stirring stage of the feeding cavity 11, and the molten metal circulating stage of the cold chamber 12 and the hot chamber 13. In the molten metal driving and raw material stirring stage, when it is needed to transport the molten metal in the feeding cavity 11 to the cold chamber 12, the electromagnetic rolling stirrer 2 is started, the electromagnetic rolling stirrer 2 generates a directional electromagnetic force acting on the molten metal in the feeding cavity 11, drives the molten metal to flow in the direction towards the liquid passage 111, and a part of the downward moving molten metal flows into the cold chamber 12 of the furnace through the prefabricated liquid passage 111 at the bottom of the furnace, and the other part of the molten metal collides with the turbulence wall 14 above the prefabricated liquid passage 111 to form a downward rolling movement, and the input metal is rolled into the molten metal inside through the rolling stirring, realizing immersion melting. In the molten metal circulating stage, the electromagnetic propeller 3 is started, the electromagnetic propeller 3 generates a continuous directional electromagnetic force acting on the molten metal in the cold chamber 12 and the hot chamber 13, drives the molten metal to flow from the cold chamber 12 to the hot chamber 13, and then flows back from the hot chamber 13 to the cold chamber 12, forms a stable molten metal circulation, and ensures the uniformity of the temperature and composition of the molten metal in the furnace body 1.

[0035] Among them, the "melting and holding integrated furnace" refers to an integrated device integrating the functions of metal molten metal smelting and holding, which can avoid heat loss during the transfer of molten metal after smelting; the "electromagnetic rolling stirrer 2" refers to a device that generates electromagnetic force through electromagnetic induction principle to drive the movement of metal molten metal in a non-contact manner; the "electromagnetic propeller 3" refers to a device that drives the molten metal to circulate and flow along a specific path through electromagnetic force, which has the same working principle as the electromagnetic rolling stirrer 2, and the difference lies in the difference of the action area and the driving direction.

[0036] In this embodiment, the three-cavity sequential communication structure of the furnace body 1 provides an orderly flow path for the molten liquid, avoiding temperature or composition unevenness caused by local retention of the molten liquid; the setting of the overflow port 111 ensures stable transition of the molten liquid from the feeding cavity 11 to the cold chamber 12 without the need for additional flow guiding components. The cooperation of the spoiler wall 14 and the electromagnetic rolling stirrer 2 realizes non-contact electromagnetic driving to achieve molten liquid rolling stirring, which can achieve three-dimensional circulation of high-temperature molten liquid in the furnace. Rolling stirring can press the crushed material into the high-temperature metal molten liquid for internal immersion melting, which can also recycle metal scraps, and the addition of refining agents can also make the metal molten liquid better fused. Electromagnetic propulsion makes the high-temperature molten liquid flow, forming a large circulation inside to balance the overall temperature in the furnace. The combination of rolling stirring and large circulation stirring can achieve three-dimensional stirring in the furnace, better improving production efficiency and saving production cost, and the whole system occupies small area and is flexible in application. Compared with the traditional "mechanical pump + graphite rotor" stirring method, there is no need to set mechanical components that extend into the molten liquid, which avoids the mixing of impurities caused by the wear of mechanical components, reduces the maintenance demand of mechanical components, and reduces the downtime loss. The cooperation of the electromagnetic propeller 3 and the three-cavity structure can drive the molten liquid to circulate between the cold chamber 12 and the hot chamber 13, promote heat exchange and component mixing of the molten liquid in the two chambers, and further ensure the quality of the molten liquid.

[0037] The existing melting furnace can only input large solid metal materials. The modification of the melting furnace can increase the function of inputting metal scraps and small pieces, but the modified auxiliary system occupies a large area and has a complex structure. On the basis of the above overall structure, in order to further improve the adaptability of raw material feeding and meet the feeding needs of different forms of metal raw materials, two functionally different feeding ports are also provided on the outer wall of the furnace body 1, which are feeding port one 15 and feeding port two 16.

[0038] The feeding port one 15 is arranged on the outer wall of the furnace body 1, and the internal passage thereof is in communication with the top space of the feeding cavity 11, which is mainly used for feeding small metal solid materials and metal scraps; the feeding port two 16 is also arranged on the outer wall of the furnace body 1, and the internal passage thereof is in communication with the internal space of the cold chamber 12, which is mainly used for feeding large metal solid materials, such as aluminum ingots, large recycled materials, etc. The feeding port one 15 is further divided into two sub-feeding ports, which are the feeding port of the feeding machine 151 and the metal scrap feeding port 152. The opening end of the feeding port of the feeding machine 151 can be connected with the discharge end of the feeding machine, which is used for automatically feeding small metal solid materials through the feeding machine; the opening structure of the metal scrap feeding port 152 is adapted to the feeding mode of the metal scrap, which can be fed by manual or special conveying equipment. The internal passages of the two sub-feeding ports are in communication with the top space of the feeding cavity 11, and are independently arranged to avoid mutual interference during feeding. The two sub-feeding ports can also be used as observation and material taking holes.

[0039] The first feeding port 15 is in communication with the top of the feeding cavity 11, so that small metal solid materials and metal scraps can directly enter the feeding cavity 11 and quickly contact the molten liquid rolled in the feeding cavity 11, thereby improving the melting efficiency; the second feeding port 16 is in communication with the cold chamber 12, which is suitable for the volume of large metal solid materials and avoids the blockage of large raw materials, and the space of the cold chamber 12 can provide a preliminary placement and preheating space for the large raw materials. The first feeding port 15 is divided into a feeding machine feeding port 151 and a metal scrap feeding port 152, and the feeding machine feeding port 151 can realize automatic feeding of small metal solid materials, thereby improving the feeding efficiency and reducing manual operation; the metal scrap feeding port 152 is independently arranged to avoid the blockage of the metal scrap in the feeding channel of the feeding machine. The multiple feeding ports can add various forms of metal materials, adapt to flexible and variable production, and feed at a position away from the burner, thereby reducing the burning loss rate of the input metal.

[0040] As shown in Figures 3-4 The metal scrap feeding port 152 in the embodiment of the present application is shown in FIG. 2, which shows the internal structure of the metal scrap feeding port 152 in the embodiment of the present application, including a spiral guide plate 1521, a dispersion hole 1522, and a pitch. The spiral guide plate 1521 refers to a plate-shaped member in a spiral structure for guiding the slow falling of raw materials along a preset path; the dispersion hole 1522 refers to a hole-shaped structure provided on the spiral guide plate 1521 for dividing the metal scrap into small strands to achieve dispersion; and the pitch refers to the distance between two adjacent spirals of the spiral guide plate 1521. In order to avoid uneven dispersion of the metal scrap during feeding, which may cause caking and affect the melting efficiency, the spiral guide plate 1521 is arranged in the internal channel of the metal scrap feeding port 152, and the central axis of the spiral guide plate 1521 coincides with the central axis of the metal scrap feeding port 152, so as to ensure that the guide path is uniformly distributed in the feeding channel. The plate body of the spiral guide plate 1521 extends in a spiral shape, and a plurality of dispersion holes 1522 are provided on the plate body. The dispersion holes 1522 penetrate through both sides of the spiral guide plate 1521, and the metal scrap can flow through the dispersion holes 1522 on both sides of the spiral guide plate 1521 to achieve dispersion. Further, the pitch of the spiral guide plate 1521 gradually decreases from top to bottom, that is, the distance between two adjacent spirals in the upper region of the spiral guide plate 1521 is greater than that in the lower region.

[0041] When feeding the metal scrap, the metal scrap is fed from the opening end of the metal scrap feeding port 152, falls on the spiral guide plate 1521, and moves downward along the spiral path of the spiral guide plate 1521. In the moving process, part of the metal scrap is dispersed to the other side of the spiral guide plate 1521 through the dispersion hole 1522, and finally falls into the feeding cavity 11 together, so that the metal scrap is more evenly dispersed and not stacked, the contact area between the metal scrap and the molten liquid is increased, and the melting uniformity is improved. The design that the pitch gradually decreases from top to bottom ensures that the metal scrap quickly enters the guide channel, thereby improving the feeding efficiency, and the small pitch in the lower region slows down the falling speed of the metal scrap, prolongs the dispersion time, and further optimizes the dispersion effect.

[0042] Optionally, the number of spiral turns of the spiral guide plate 1521 can be adjusted according to the length of the metal shavings inlet 152. The shape of the dispersion hole 1522 can be circular, square, or other polygonal, as long as it can disperse the metal shavings. To prevent metal shavings from sticking to the spiral guide plate 1521, a high-temperature resistant anti-stick coating can be provided on the surface of the spiral guide plate 1521; an anti-stick coating can also be provided on the inner wall of the metal shavings inlet 152 to prevent metal shavings from adhering.

[0043] like Figures 5-6 As shown, this diagram illustrates the structure of the discharge port 17 and its surrounding components in one embodiment of the present invention. A discharge pipe is provided at the outer end of the discharge port 17, and an annular sealing plate 172 is located at the discharge end of the pipe. The annular sealing plate 172 has a discharge end face 171, which forms an angle with the central axis of the discharge port 17, and the discharge end face 171 is tilted downwards to guide the molten liquid outwards in a fixed direction, preventing splashing. A horizontal rotating shaft 4 is provided on the side of the annular sealing plate 172 away from the furnace body 1. The central axis of the rotating shaft 4 is perpendicular to the central axis of the discharge port 17, ensuring that the rotating shaft 4 can drive the subsequent components to move stably when it rotates. A swing arm 41 is fixedly connected to the shaft 4. One end of the swing arm 41 is fixed to the shaft 4, and the other end extends to the outside of the annular sealing plate 172. The end of the swing arm 41 away from the shaft 4 is elastically connected to the sealing cover 411, allowing the surface of the sealing cover 411 to fit against the surface of the annular sealing plate 172, thus closing the outlet 17. Several elastic elements 42 are connected between the swing arm 41 and the sealing cover 411. The elastic elements 42 are evenly distributed on the outer periphery of the sealing cover 411. When the sealing cover 411 fits against the annular sealing plate 172, the elastic elements 42 are in a slightly compressed state, providing a continuous fitting force towards the annular sealing plate 172 for the sealing cover 411.

[0044] To further enhance the sealing effect, a sealing groove 1711 is provided on the corresponding plate surface of the annular sealing plate 172 and the sealing cover 411, or on the corresponding plate surface of the discharge end face 171 and the sealing cover 411. The groove structure of the sealing groove 1711 can be adapted to the shape of the sealing ring 1712. The sealing ring 1712 is placed in the sealing groove 1711, and the height of the sealing ring 1712 is slightly higher than the depth of the sealing groove 1711. When the sealing cover 411 is in contact with the annular sealing plate 172 or the discharge end face 171, the sealing ring 1712 is compressed, filling the tiny gap between the sealing cover 411 and the corresponding plate surface. A flow channel 5 is provided directly below the discharge port 17. The length direction of the flow channel 5 extends along the direction of the molten liquid flowing out of the discharge port 17. The opening of the flow channel 5 faces upward, and the inlet end of the flow channel 5 corresponds to the outlet end of the discharge port 17. The bottom of the flow channel 5 is inclined along the length direction to ensure that the molten liquid can flow along the bottom of the channel by gravity.

[0045] When the molten metal needs to be discharged, the rotating shaft 4 is rotated, and the rotating shaft 4 drives the swing arm 41 to rotate around the central axis of the rotating shaft 4, and the swing arm 41 drives the sealing cover 411 to move away from the annular sealing plate 172, and the discharge port 17 is opened. Under the driving of the self-pressure and the auxiliary driving of the electromagnetic propeller 3, the molten metal in the hot chamber 13 flows to the discharge end surface 171 through the internal passage of the discharge port 17, flows into the inlet end of the flow channel 5 along the inclined discharge end surface 171, and then flows along the inclined groove bottom of the flow channel 5 to the outlet end of the flow channel 5, and finally is transported to the subsequent processing equipment or storage container. When the molten metal does not need to be discharged, the rotating shaft 4 is reversely rotated, the swing arm 41 drives the sealing cover 411 to move close to the annular sealing plate 172, and when the sealing cover 411 is attached to the annular sealing plate 172, the elastic member 42 is compressed, and the continuous rebound force acts on the sealing cover 411, so that the sealing cover 411 is tightly attached to the annular sealing plate 172. At the same time, the sealing ring 1712 in the sealing groove 1711 is deformed by extrusion, and fills the small gap between the sealing cover 411 and the annular sealing plate 172, so as to realize the sealing of the discharge port 17 and prevent the molten metal from leaking.

[0046] Wherein, the "discharge end surface 171" refers to an inclined surface arranged at the outer end of the discharge port 17, which is used to guide the directional flow of the molten metal; the "annular sealing plate 172" refers to an annular member fixed on the outer periphery of the discharge end surface 171, which is used to attach to the sealing cover 411 to realize sealing; the "elastic member 42" refers to an elastic member connected between the swing arm 41 and the sealing cover 411, which can provide a continuous attachment force, such as a spring, an elastic rubber block, etc.; the "sealing ring 1712" refers to an annular sealing member placed in the sealing groove 1711, which fills the sealing gap by elastic deformation.

[0047] The discharge port 17 communicates with the hot chamber 13, ensures that the discharged molten metal is subjected to the circulation treatment of the cold chamber 12 and the hot chamber 13, the temperature is uniform and the composition is stable, avoids that the molten metal that is not fully treated is discharged, and affects the quality of subsequent processing; the downwardly inclined discharge end surface 171 can guide the molten metal to flow out along a fixed direction, avoid splashing of the molten metal, and improve the operation safety. The fitting structure of the annular sealing plate 172 and the sealing cover 411 provides a basic sealing for the discharge port 17; the elastic members 42 are uniformly distributed on the outer periphery of the sealing cover 411, ensure that the sealing cover 411 is uniformly stressed, continuously fits the annular sealing plate 172, is not affected by the vibration or temperature change of the furnace body 1, avoids the generation of a sealing gap, and the cooperation of the sealing groove 1711 and the sealing ring 1712 fills the small gap between the sealing surfaces through the elastic deformation of the sealing ring 1712, further improves the sealing effect, forms a triple sealing mechanism of “basic fitting + elastic pressure + gap filling”, and significantly reduces the risk of molten metal leakage. The cooperation of the rotating shaft 4 and the swing arm 41 makes the opening and closing of the sealing cover 411 smooth, without the plugging operation of the traditional plug, and improves the operation convenience; the setting of the flow channel 5 can directly receive the molten metal flowing out of the discharge port 17, avoid the molten metal from dropping around the furnace body 1, ensure the cleanliness of the production environment, and the inclined groove bottom of the flow channel 5 realizes the non-powered conveying of the molten metal, simplifies the structure and reduces the energy consumption.

[0048] Optionally, the elastic member 42 can be selected from a cylindrical coil spring, a disc spring or an elastic rubber block, as long as it can provide a continuous fitting force; the sealing groove 1711 can be opened for multiple turns, and multiple sealing rings 1712 are correspondingly arranged to further enhance the sealing effect; the length of the flow channel 5 can be adjusted according to the layout of the production site, and the inclination angle of the groove bottom of the flow channel 5 can be designed according to the flowability of the molten metal to ensure that the molten metal can flow smoothly. Further, to prevent the molten metal from solidifying in the flow channel 5, a heating layer can be arranged on the groove wall of the flow channel 5, and the heating layer can adopt an electric heating or steam heating mode; a high-temperature-resistant coating can be arranged on the inner wall of the flow channel 5 to reduce the adhesion of the molten metal. To fix the position of the sealing cover 411, a locking mechanism can be arranged on the rotating shaft 4, and when the sealing cover 411 is in the sealing position or the open position, the rotating shaft 4 is fixed by the locking mechanism to avoid the sealing failure or molten metal leakage caused by accidental rotation of the rotating shaft 4.

[0049] In summary, the combination structure of the furnace body 1, the electromagnetic rolling stirrer 2 and the electromagnetic propeller 3 realizes the non-contact operation of molten metal driving and stirring through electromagnetic force, replaces the traditional mechanical contact type driving and stirring structure, solves the problems of impurity mixing and frequent maintenance in the traditional “mechanical pump + graphite rotor” structure from the structural level, and ensures the stable realization of molten metal flow and stirring through the structural cooperation of the chamber communication, the liquid passage 111 and the turbulence wall 14, thereby improving the operation reliability of the melting and holding integrated furnace and the molten metal treatment quality.

[0050] The structure that the spiral guide plate 1521 is coaxial with the metal scrap feeding port 152 ensures that the guide path of the spiral guide plate 1521 is uniformly distributed in the feeding channel, avoids the accumulation of metal scraps on the inner wall of the channel, and at the same time, the spiral structure slows down the falling speed of the metal scraps, providing time for the dispersion of the metal scraps; the setting of the dispersion hole 1522 allows the metal scraps to be divided into small groups during the falling process, and after entering the feeding cavity 11, they can be more uniformly contacted with the molten liquid, cooperating with the molten liquid overturning movement driven by the electromagnetic overturning stirrer 2, quickly melting into the molten liquid, avoiding the problem of local accumulation and insufficient melting caused by traditional concentrated metal scrap feeding. Through the cooperation of the spiral guide plate 1521 and the dispersion hole 1522, the dispersibility and falling uniformity of the metal scraps are improved, solving the problems of easy agglomeration of metal scrap feeding and low melting efficiency.

[0051] The downwardly inclined discharge end surface 171 guides the molten liquid to flow out in a fixed direction, avoiding splashing when the molten liquid flows out, ensuring operation safety; the structure that the annular sealing plate 172 is attached to the sealing cover 411 realizes the sealing of the discharge port 17, preventing molten liquid leakage; the central axis of the rotating shaft 4 is perpendicular to the central axis of the discharge port 17, ensuring that the path is stable when the sealing cover 411 is rotated by the swing arm 41, the opening and closing action is smooth, and jamming is avoided; the elastic connection mode makes the sealing cover 411 always have a force towards the annular sealing plate 172, ensuring that the sealing cover 411 is tightly attached to the annular sealing plate 172, improving the sealing reliability, and avoiding the sealing cover 411 being stuck by the annular sealing plate 172 when rotating, without interference. This structure solves the problems of easy leakage of traditional plug sealing and inconvenient opening and closing, and at the same time, the discharge port 17 can be opened and closed and the molten liquid can be discharged without tilting the furnace body 1, improving the operation convenience and safety, cooperating with the structure that the discharge port 17 is communicated with the hot chamber 13, ensuring the stability and controllability of the molten liquid discharge process.

[0052] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present application and are not limiting. Although the present application has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present application can be modified or replaced equivalently without departing from the spirit and scope of the present application, which should be covered in the scope of the claims of the present application.

Claims

1. An electromagnetic flow-rolling type melting and holding integrated furnace for non-ferrous metal regeneration, characterized by, The furnace body (1) has a feeding cavity (11), a cold chamber (12) and a hot chamber (13) which are communicated in sequence, a spoiler wall (14) is arranged between the feeding cavity (11) and the cold chamber (12), the lower part of the spoiler wall (14) is provided with a liquid passing opening (111), the electromagnetic rolling stirring device (2) is arranged at the lower part outside the feeding cavity (11), the electromagnetic rolling stirring device (2) is configured to drive part of the molten liquid in the feeding cavity (11) to enter the cold chamber (12) through the liquid passing opening (111), and drive part of the molten liquid in the feeding cavity (11) to impact the spoiler wall (14) and roll downward, so as to stir the solution and the raw materials, the electromagnetic propeller (3) is arranged on the outer bottom wall of the furnace body (1) and located between the cold chamber (12) and the hot chamber (13), and the electromagnetic propeller (3) is configured to drive the molten liquid to circulate in the cold chamber (12) and the hot chamber (13). The furnace body (1) is further provided with a feeding port one (15) communicated with the top of the feeding cavity (11) and a feeding port two (16) communicated with the cold chamber (12), the feeding port one (15) is used for feeding metal solid particles and metal scraps, and the feeding port two (16) is used for feeding metal solid blocks.

2. The electromagnetic flow-rolling type colored metal regeneration melting and holding integrated furnace according to claim 1, characterized by, The feeding port one (15) comprises a feeding port of a feeding machine (151) and a metal scrap feeding port (152), the feeding port of the feeding machine (151) is used for feeding metal solid particles in cooperation with a feeding machine, and the metal scrap feeding port (152) is used for feeding metal scraps.

3. The electromagnetic flow-rolling type colored metal regeneration melting and holding integrated furnace according to claim 1, characterized by, The furnace body (1) is further provided with a discharging port (17) on the outer wall, and the discharging port (17) is communicated with the hot chamber (13).

4. The electromagnetic flow-rolling type non-ferrous metal melting and holding integrated furnace according to claim 2, characterized in that, The metal scrap feeding port (152) is provided with a spiral material guide plate (1521) coaxial with the metal scrap feeding port (152), and the spiral material guide plate (1521) is provided with a plurality of dispersion holes (1522).

5. The electromagnetic flow-rolling type non-ferrous metal melting and holding integrated furnace according to claim 4, characterized in that, The pitch of the spiral material guide plate (1521) gradually decreases from top to bottom.

6. The electromagnetic flow-rolling type non-ferrous metal melting and holding integrated furnace according to claim 3, characterized in that, The discharging pipe is connected with a discharging pipe, the outer periphery of the discharging pipe is provided with an annular sealing plate (172), the annular sealing plate (172) is inclined to the side away from the furnace body (1) from bottom to top, the outer side of the furnace body (1) is provided with a swing assembly for blocking the discharging pipe, the swing assembly comprises a swing arm (41) and a sealing cover (411) elastically connected to the swing arm (41), the sealing cover (411) is attached to the annular sealing plate (172), and the sealing cover (411) is configured to open or close the discharging pipe after rotating with the swing arm (41).

7. The electromagnetic flow-rolling type molten metal preserving and regenerating integrated furnace according to claim 6, wherein The end of the swing arm (41) is provided with a connecting plate, a plurality of elastic members (42) are connected between the connecting plate and the sealing cover (411), and the elastic members (42) are used to provide the force of abutting the sealing cover (411) and the annular sealing plate (172).

8. The electromagnetic flow-rolling type molten metal preserving and regenerating integrated furnace according to claim 6, wherein Corresponding sealing grooves (1711) are arranged on the annular sealing plate (172) and the sealing cover (411), and sealing rings (1712) are arranged in the sealing grooves (1711).

9. The electromagnetic flow-rolling type non-ferrous metal melting and holding integrated furnace according to claim 6, characterized in that, A flow channel (5) is arranged below the discharge port (17).

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